Light emitting device emitting UV-C radiation at different wavelengths upward and downward
AssigneeCyclean, Inc.
InventorsWilliam Hood, Chase Hood
Life of this patent
Estimating the term…
Abstract
In one embodiment, a light emitting device comprises one or more first light sources emitting UV-C light downward to irradiate the environment below the light emitting device (such as air and the floor and other surfaces). In another embodiment, the light emitting device comprises one or more second light sources emitting UV-C light of a different peak wavelength than the first light sources oriented to emit light upward to irradiate the environment above the light emitting device (such as air, the ceiling, and other surfaces). In one embodiment, one or more first light sources and the one or more second light sources emit light at different, independent duty cycles.
Claims18
A light emitting device comprising:
- one or more first light sources emitting a first radiant flux with a peak wavelength within a wavelength range of 220 nanometers and 225 nanometers;
- one or more second light sources emitting a second radiant flux with a peak wavelength of 254 nanometers;
- and
- one or more visible light emitting sources emitting visible light that provides a visual representation of an angular light spread from the one or more first light sources or the one or more second light sources,
- wherein the first radiant flux is directed downward, the second radiant flux is directed upward when the light emitting device is suspended or mounted in an environment, and an angular full-width at half-maximum luminous intensity of the visible light is within 20% of an angular full-width at half maximum radiant intensity of the first radiant flux in a light output plane.
A light emitting device comprising:
- one or more first light sources emitting a first radiant flux with a peak wavelength of 222 nanometers at a first duty cycle;
- one or more visible light emitting sources emitting visible light that provides a visual representation of an angular light spread from the one or more first light sources or the one or more second light sources;
- and
- one or more second light sources emitting a second radiant flux with a peak wavelength of 254 nanometers at a second duty cycle different than the first duty cycle,
- wherein the first radiant flux is directed downward, the second radiant flux is directed upward when the light emitting device is suspended or mounted in an environment, and an angular full-width at half-maximum luminous intensity of the visible light is within 20% of an angular full-width at half maximum radiant intensity of the first radiant flux in a light output plane.
A method of reducing a pathogenic bioburden in an environment, the method comprising:
- suspending or mounting a light emitting device in an environment;
- emitting from one or more first light sources a first radiant flux with a peak wavelength within a range of 220 nanometers and 225 nanometers downward into the environment;
- emitting from one or more second light sources a second radiant flux with a peak wavelength of 254 nanometers upward into the environment;
- and
- emitting visible light from one or more visible light emitting sources that provides a visual representation of an angular light spread from the one or more first light sources or the one or more second light sources,
- wherein an angular full-width at half-maximum luminous intensity of the visible light is within 20% of an angular full-width at half maximum radiant intensity of the first radiant flux in a light output plane.
Dependencies are inferred from the claim text.